Document feeder e-duplex operation
Following is the basic sequence of operation for a document feeder simplex job.
NOTE: For an e-duplex copy job, the background scan operation begins immediately after the simplex
sequence of operation ends.
1. The feed motor continues to drive the paper until the leading edge activates the prescan back-side
sensor. The printer rmware registers the position of the leading edge of the paper.
2. The feed motor continues to rotate to drive the leading edge of the paper through the preset distance
from prescan back-side sensor to the back-side background selector scan zone. The back-side
background scan module begins scanning and retrieval of the data.
3. The prescan back-side sensor deactivates when the trailing edge of the paper passes it. The printer
rmware registers the trailing edge of the paper position.
4. The feed motor continues to rotate to drive the trailing edge of the paper edge past the back-side
background selector scan zone.
5. The feed motor continues to rotate and ejects the trailing edge of the paper into the output bin.
6. One of the following occurs:
●
If the copy job is complete, the ADF paper present sensor deactivates. The feed motor reverses
rotation to raise the pick roller.
●
If the copy job is not complete, the ADF paper present sensor is active. The printer rmware detects
additional pages in the input tray and the process repeats.
ENWW Document feeder system (M631, M632, M633) 73
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